According to Total Licensing (via ANN), there’s a Professor Layton TV series in the works. It’s apparently slated for 2018 with 26 episodes planned. It’s unclear whether this is animated or live-action, but smart money says animated.
Given that the series is already known for cutscenes animated by notable anime studios, and there was even an OVA movie, I’m honestly suprised it didn’t happen sooner.
Here’s hoping that it’s better than the Ace Attorney anime.